公开(公告)号：BR0107816A

公开(公告)日：2002-10-29

申请号：BR0107816

申请日：2001-01-12

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDERICH ,  ADRIAN TILL ,  VICARI MAXIMILIAN

IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that-before the hydrolysis of the methyl formate-the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.

公开(公告)号：NO20023515A

公开(公告)日：2002-08-26

申请号：NO20023515

申请日：2002-07-23

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  WAGNER GERHARD ,  ADRIAN TILL

IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C22C14/00 ,  C22C38/00 ,  C22C38/42 ,  C22C38/44 ,  C07C

CPC classification number: C22C38/44 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C22C14/00 ,  C22C38/001 ,  C22C38/42 ,  C07C53/02

公开(公告)号：NO20023480L

公开(公告)日：2002-08-22

申请号：NO20023480

申请日：2002-07-22

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDRICH ,  VICARI MAXIMILIAN ,  WAGNER GERHARD ,  ADRIAN TILL

IPC: C07C51/56 ,  B01J14/00 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02 ,  C07C

Abstract: The invention relates to a process for the preparation of anhydrous or substantially anhydrous formic acid. The process has the special feature that a liquid of the general formula Iwhere the radicals R and R are alkyl, cycloalkyl, aryl or aralkyl groups, or R and R jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R is hydrogen or a C1-C4-alkyl group, employed as extractant is also employed as washing liquid for the offgases produced in the process.

公开(公告)号：DE19860598A1

公开(公告)日：2000-07-06

申请号：DE19860598

申请日：1998-12-29

Applicant: BASF AG

Inventor： ADRIAN TILL ,  BESLING BERND ,  HALLMANN HEIKO ,  NIEKERKEN JOERG ,  SPINDLER VOLKER ,  OHLIGSCHLAEGER ANDRE ,  RIMPF MATTHIAS

IPC: B01D3/00 ,  B01D3/18 ,  B01D3/20 ,  B01J8/00 ,  B01J8/02 ,  B01J8/18 ,  B01J8/20

公开(公告)号：CA2493079C

公开(公告)日：2012-03-20

申请号：CA2493079

申请日：2003-07-22

Applicant: BASF AG

Inventor： ADRIAN TILL ,  HILL THOMAS ,  KINDLER KLAUS ,  HEIDA BERND

IPC: C07C7/08 ,  B01D3/40 ,  C07C5/22

Abstract: The invention relates to a continuous method for separating a C4 cut (C4) by means of extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK). A separating wall (TW), forming a first partial region (A), a second partial region (B) and a lower common column region (C), is arranged in the longitudinal direction of the extractive distillation column (EDK). According to said method, a head flow (C4H10) comprising butane is separated from the first partial region (A), a head flow (C4H8) comprising butene is separated from the second partial region (B), and a flow (C4H6) comprising the hydrocarbons from the C4 cut is separated from the lower common column region (C), said hydrocarbons dissolving more easily in the selective solvent (LM) than the butane and the butene.

公开(公告)号：AU2003250133B2

公开(公告)日：2009-12-03

申请号：AU2003250133

申请日：2003-07-22

Applicant: BASF AG

Inventor： HEIDA BERND ,  HILL THOMAS ,  KINDLER KLAUS ,  ADRIAN TILL

IPC: C07C7/08 ,  B01D3/40 ,  C07C5/22

Abstract: In a continuous process for fractionating a C4 fraction (C4) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing wall (TW) is installed in the longitudinal direction in the extractive distillation column (EDK) to form a first region (A), a second region (B) and a lower combined column region (C) and a top stream (C4H10) comprising the butanes is taken off from the first region (A), a top stream (C4H8) comprising the butenes is taken off from the second region (B) and a stream (C4H6) comprising the hydrocarbons from the C4 fraction which are more soluble in the selective solvent (LM) than are the butanes and the butenes is taken off from the lower combined column region (C).

公开(公告)号：NO327886B1

公开(公告)日：2009-10-12

申请号：NO20023480

申请日：2002-07-22

Applicant: BASF AG

Inventor： AUER HEINZ ,  HAMMER HANS ,  BESSLING BERND ,  HASSE HANS ,  SAUER FRIEDRICH ,  WAGNER GERHARD ,  ADRIAN TILL ,  VICARI MAXIMILIAN

IPC: C07C51/09 ,  C07C51/56 ,  B01J14/00 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

Abstract: The invention relates to a process for the preparation of anhydrous or substantially anhydrous formic acid. The process has the special feature that a liquid of the general formula Iwhere the radicals R and R are alkyl, cycloalkyl, aryl or aralkyl groups, or R and R jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R is hydrogen or a C1-C4-alkyl group, employed as extractant is also employed as washing liquid for the offgases produced in the process.

公开(公告)号：NO327831B1

公开(公告)日：2009-10-05

申请号：NO20023481

申请日：2002-07-22

Applicant: BASF AG

Inventor： AUER HEINZ ,  HAMMER HANS ,  BESSLING BERND ,  HASSE HANS ,  SAUER FRIEDRICH ,  ADRIAN TILL ,  VICARI MAXIMILIAN

IPC: C07C51/09 ,  B01J14/00 ,  C07C27/02 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.

公开(公告)号：DE50111854D1

公开(公告)日：2007-02-22

申请号：DE50111854

申请日：2001-05-09

Applicant: BASF AG

Inventor： MEYER GERALD ,  KAIBEL GERD ,  BOHNER GERD ,  KINDLER KLAUS ,  ADRIAN TILL ,  PICKENAECKER KARIN ,  PAHL MELANIE ,  HILL THOMAS

IPC: C07C7/08 ,  C07C11/167 ,  B01D3/14 ,  B01D3/40 ,  C07C5/09 ,  C07C7/00 ,  C07C7/163 ,  C10G7/08 ,  C10G70/00 ,  C10G70/02

Abstract: In a process for the work-up of a C4 fraction, comprising the process steps Extractive distillation (I), Selective hydrogenation over a heterogeneous catalyst (II), a crude 1,3-butadiene stream being obtained following process steps (I) and (II) and Distillation of the crude 1,3-butadiene stream for isolating pure 1,3-butadiene (III), the process steps I and II are carried out in a single column or in thermally coupled columns and the process step III is carried out in a second column.

公开(公告)号：AT255084T

公开(公告)日：2003-12-15

申请号：AT99969405

申请日：1999-09-21

Applicant: BASF AG

Inventor： THEIS GERHARD ,  ADRIAN TILL ,  BESSLING BERND ,  HASSE HANS ,  VANSANT FRANS

IPC: C07C29/10 ,  C07C29/80 ,  C07C31/20

Abstract: A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.